Development of Leak Detection System Using High Temperature-Resistant Microphones

概要

論文の詳細を見る
This report describes the development and testing of a coolant leak detection system for an inlet feeder pipe of an advanced thermal reactor (ATR) using high temperature-resistant microphones. Such microphones must be resistant to both high temperatures and high radia- tion doses. Leakage sound characteristics, attenuation of the sound level in a heat insulating box for the inlet feeder pipes, and background noise were investigated using the experimental facility and the prototype ATRFUGEN. The optimum frequency ranges for the microphone were then determined based on the observed leakage sound and background noise. The ability of the microphone to discriminate between leaks and other burst-type noises was also investi- gated by statistical analyses. Finally, it was confirmed that the present method could detect a leak within a couple of seconds.
社団法人日本原子力学会の論文
1995-03-25